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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2007 The Guava Authors<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package com.google.common.collect;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import com.google.common.annotations.Beta;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import com.google.common.annotations.GwtCompatible;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import com.google.common.base.Objects;<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.Collection;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.Iterator;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Set;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import javax.annotation.Nullable;<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>/**<a name="line.29"></a>
<span class="sourceLineNo">030</span> * A multiset which forwards all its method calls to another multiset.<a name="line.30"></a>
<span class="sourceLineNo">031</span> * Subclasses should override one or more methods to modify the behavior of the<a name="line.31"></a>
<span class="sourceLineNo">032</span> * backing multiset as desired per the &lt;a<a name="line.32"></a>
<span class="sourceLineNo">033</span> * href="http://en.wikipedia.org/wiki/Decorator_pattern"&gt;decorator pattern&lt;/a&gt;.<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * &lt;p&gt;&lt;b&gt;Warning:&lt;/b&gt; The methods of {@code ForwardingMultiset} forward<a name="line.35"></a>
<span class="sourceLineNo">036</span> * &lt;b&gt;indiscriminately&lt;/b&gt; to the methods of the delegate. For example,<a name="line.36"></a>
<span class="sourceLineNo">037</span> * overriding {@link #add(Object, int)} alone &lt;b&gt;will not&lt;/b&gt; change the<a name="line.37"></a>
<span class="sourceLineNo">038</span> * behavior of {@link #add(Object)}, which can lead to unexpected behavior. In<a name="line.38"></a>
<span class="sourceLineNo">039</span> * this case, you should override {@code add(Object)} as well, either providing<a name="line.39"></a>
<span class="sourceLineNo">040</span> * your own implementation, or delegating to the provided {@code standardAdd}<a name="line.40"></a>
<span class="sourceLineNo">041</span> * method.<a name="line.41"></a>
<span class="sourceLineNo">042</span> *<a name="line.42"></a>
<span class="sourceLineNo">043</span> * &lt;p&gt;The {@code standard} methods and any collection views they return are not<a name="line.43"></a>
<span class="sourceLineNo">044</span> * guaranteed to be thread-safe, even when all of the methods that they depend<a name="line.44"></a>
<span class="sourceLineNo">045</span> * on are thread-safe.<a name="line.45"></a>
<span class="sourceLineNo">046</span> *<a name="line.46"></a>
<span class="sourceLineNo">047</span> * @author Kevin Bourrillion<a name="line.47"></a>
<span class="sourceLineNo">048</span> * @author Louis Wasserman<a name="line.48"></a>
<span class="sourceLineNo">049</span> * @since 2.0 (imported from Google Collections Library)<a name="line.49"></a>
<span class="sourceLineNo">050</span> */<a name="line.50"></a>
<span class="sourceLineNo">051</span>@GwtCompatible<a name="line.51"></a>
<span class="sourceLineNo">052</span>public abstract class ForwardingMultiset&lt;E&gt; extends ForwardingCollection&lt;E&gt;<a name="line.52"></a>
<span class="sourceLineNo">053</span>    implements Multiset&lt;E&gt; {<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>  /** Constructor for use by subclasses. */<a name="line.55"></a>
<span class="sourceLineNo">056</span>  protected ForwardingMultiset() {}<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span>  @Override protected abstract Multiset&lt;E&gt; delegate();<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span>  @Override<a name="line.60"></a>
<span class="sourceLineNo">061</span>  public int count(Object element) {<a name="line.61"></a>
<span class="sourceLineNo">062</span>    return delegate().count(element);<a name="line.62"></a>
<span class="sourceLineNo">063</span>  }<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>  @Override<a name="line.65"></a>
<span class="sourceLineNo">066</span>  public int add(E element, int occurrences) {<a name="line.66"></a>
<span class="sourceLineNo">067</span>    return delegate().add(element, occurrences);<a name="line.67"></a>
<span class="sourceLineNo">068</span>  }<a name="line.68"></a>
<span class="sourceLineNo">069</span><a name="line.69"></a>
<span class="sourceLineNo">070</span>  @Override<a name="line.70"></a>
<span class="sourceLineNo">071</span>  public int remove(Object element, int occurrences) {<a name="line.71"></a>
<span class="sourceLineNo">072</span>    return delegate().remove(element, occurrences);<a name="line.72"></a>
<span class="sourceLineNo">073</span>  }<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span>  @Override<a name="line.75"></a>
<span class="sourceLineNo">076</span>  public Set&lt;E&gt; elementSet() {<a name="line.76"></a>
<span class="sourceLineNo">077</span>    return delegate().elementSet();<a name="line.77"></a>
<span class="sourceLineNo">078</span>  }<a name="line.78"></a>
<span class="sourceLineNo">079</span><a name="line.79"></a>
<span class="sourceLineNo">080</span>  @Override<a name="line.80"></a>
<span class="sourceLineNo">081</span>  public Set&lt;Entry&lt;E&gt;&gt; entrySet() {<a name="line.81"></a>
<span class="sourceLineNo">082</span>    return delegate().entrySet();<a name="line.82"></a>
<span class="sourceLineNo">083</span>  }<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span>  @Override public boolean equals(@Nullable Object object) {<a name="line.85"></a>
<span class="sourceLineNo">086</span>    return object == this || delegate().equals(object);<a name="line.86"></a>
<span class="sourceLineNo">087</span>  }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span>  @Override public int hashCode() {<a name="line.89"></a>
<span class="sourceLineNo">090</span>    return delegate().hashCode();<a name="line.90"></a>
<span class="sourceLineNo">091</span>  }<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span>  @Override<a name="line.93"></a>
<span class="sourceLineNo">094</span>  public int setCount(E element, int count) {<a name="line.94"></a>
<span class="sourceLineNo">095</span>    return delegate().setCount(element, count);<a name="line.95"></a>
<span class="sourceLineNo">096</span>  }<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span>  @Override<a name="line.98"></a>
<span class="sourceLineNo">099</span>  public boolean setCount(E element, int oldCount, int newCount) {<a name="line.99"></a>
<span class="sourceLineNo">100</span>    return delegate().setCount(element, oldCount, newCount);<a name="line.100"></a>
<span class="sourceLineNo">101</span>  }<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span>  /**<a name="line.103"></a>
<span class="sourceLineNo">104</span>   * A sensible definition of {@link #contains} in terms of {@link #count}. If<a name="line.104"></a>
<span class="sourceLineNo">105</span>   * you override {@link #count}, you may wish to override {@link #contains} to<a name="line.105"></a>
<span class="sourceLineNo">106</span>   * forward to this implementation.<a name="line.106"></a>
<span class="sourceLineNo">107</span>   * <a name="line.107"></a>
<span class="sourceLineNo">108</span>   * @since 7.0<a name="line.108"></a>
<span class="sourceLineNo">109</span>   */<a name="line.109"></a>
<span class="sourceLineNo">110</span>  @Override @Beta protected boolean standardContains(@Nullable Object object) {<a name="line.110"></a>
<span class="sourceLineNo">111</span>    return count(object) &gt; 0;<a name="line.111"></a>
<span class="sourceLineNo">112</span>  }<a name="line.112"></a>
<span class="sourceLineNo">113</span><a name="line.113"></a>
<span class="sourceLineNo">114</span>  /**<a name="line.114"></a>
<span class="sourceLineNo">115</span>   * A sensible definition of {@link #clear} in terms of the {@code iterator}<a name="line.115"></a>
<span class="sourceLineNo">116</span>   * method of {@link #entrySet}. If you override {@link #entrySet}, you may<a name="line.116"></a>
<span class="sourceLineNo">117</span>   * wish to override {@link #clear} to forward to this implementation.<a name="line.117"></a>
<span class="sourceLineNo">118</span>   *<a name="line.118"></a>
<span class="sourceLineNo">119</span>   * @since 7.0<a name="line.119"></a>
<span class="sourceLineNo">120</span>   */<a name="line.120"></a>
<span class="sourceLineNo">121</span>  @Override @Beta protected void standardClear() {<a name="line.121"></a>
<span class="sourceLineNo">122</span>    Iterator&lt;Entry&lt;E&gt;&gt; entryIterator = entrySet().iterator();<a name="line.122"></a>
<span class="sourceLineNo">123</span>    while (entryIterator.hasNext()) {<a name="line.123"></a>
<span class="sourceLineNo">124</span>      entryIterator.next();<a name="line.124"></a>
<span class="sourceLineNo">125</span>      entryIterator.remove();<a name="line.125"></a>
<span class="sourceLineNo">126</span>    }<a name="line.126"></a>
<span class="sourceLineNo">127</span>  }<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
<span class="sourceLineNo">129</span>  /**<a name="line.129"></a>
<span class="sourceLineNo">130</span>   * A sensible, albeit inefficient, definition of {@link #count} in terms of<a name="line.130"></a>
<span class="sourceLineNo">131</span>   * {@link #entrySet}. If you override {@link #entrySet}, you may wish to<a name="line.131"></a>
<span class="sourceLineNo">132</span>   * override {@link #count} to forward to this implementation.<a name="line.132"></a>
<span class="sourceLineNo">133</span>   * <a name="line.133"></a>
<span class="sourceLineNo">134</span>   * @since 7.0<a name="line.134"></a>
<span class="sourceLineNo">135</span>   */<a name="line.135"></a>
<span class="sourceLineNo">136</span>  @Beta protected int standardCount(@Nullable Object object) {<a name="line.136"></a>
<span class="sourceLineNo">137</span>    for (Entry&lt;?&gt; entry : this.entrySet()) {<a name="line.137"></a>
<span class="sourceLineNo">138</span>      if (Objects.equal(entry.getElement(), object)) {<a name="line.138"></a>
<span class="sourceLineNo">139</span>        return entry.getCount();<a name="line.139"></a>
<span class="sourceLineNo">140</span>      }<a name="line.140"></a>
<span class="sourceLineNo">141</span>    }<a name="line.141"></a>
<span class="sourceLineNo">142</span>    return 0;<a name="line.142"></a>
<span class="sourceLineNo">143</span>  }<a name="line.143"></a>
<span class="sourceLineNo">144</span><a name="line.144"></a>
<span class="sourceLineNo">145</span>  /**<a name="line.145"></a>
<span class="sourceLineNo">146</span>   * A sensible definition of {@link #add(Object)} in terms of {@link<a name="line.146"></a>
<span class="sourceLineNo">147</span>   * #add(Object, int)}. If you override {@link #add(Object, int)}, you may<a name="line.147"></a>
<span class="sourceLineNo">148</span>   * wish to override {@link #add(Object)} to forward to this implementation.<a name="line.148"></a>
<span class="sourceLineNo">149</span>   * <a name="line.149"></a>
<span class="sourceLineNo">150</span>   * @since 7.0<a name="line.150"></a>
<span class="sourceLineNo">151</span>   */<a name="line.151"></a>
<span class="sourceLineNo">152</span>  @Beta protected boolean standardAdd(E element) {<a name="line.152"></a>
<span class="sourceLineNo">153</span>    add(element, 1);<a name="line.153"></a>
<span class="sourceLineNo">154</span>    return true;<a name="line.154"></a>
<span class="sourceLineNo">155</span>  }<a name="line.155"></a>
<span class="sourceLineNo">156</span><a name="line.156"></a>
<span class="sourceLineNo">157</span>  /**<a name="line.157"></a>
<span class="sourceLineNo">158</span>   * A sensible definition of {@link #addAll(Collection)} in terms of {@link<a name="line.158"></a>
<span class="sourceLineNo">159</span>   * #add(Object)} and {@link #add(Object, int)}. If you override either of<a name="line.159"></a>
<span class="sourceLineNo">160</span>   * these methods, you may wish to override {@link #addAll(Collection)} to<a name="line.160"></a>
<span class="sourceLineNo">161</span>   * forward to this implementation.<a name="line.161"></a>
<span class="sourceLineNo">162</span>   * <a name="line.162"></a>
<span class="sourceLineNo">163</span>   * @since 7.0<a name="line.163"></a>
<span class="sourceLineNo">164</span>   */<a name="line.164"></a>
<span class="sourceLineNo">165</span>  @Beta @Override protected boolean standardAddAll(<a name="line.165"></a>
<span class="sourceLineNo">166</span>      Collection&lt;? extends E&gt; elementsToAdd) {<a name="line.166"></a>
<span class="sourceLineNo">167</span>    return Multisets.addAllImpl(this, elementsToAdd);<a name="line.167"></a>
<span class="sourceLineNo">168</span>  }<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span>  /**<a name="line.170"></a>
<span class="sourceLineNo">171</span>   * A sensible definition of {@link #remove(Object)} in terms of {@link<a name="line.171"></a>
<span class="sourceLineNo">172</span>   * #remove(Object, int)}. If you override {@link #remove(Object, int)}, you<a name="line.172"></a>
<span class="sourceLineNo">173</span>   * may wish to override {@link #remove(Object)} to forward to this<a name="line.173"></a>
<span class="sourceLineNo">174</span>   * implementation.<a name="line.174"></a>
<span class="sourceLineNo">175</span>   * <a name="line.175"></a>
<span class="sourceLineNo">176</span>   * @since 7.0<a name="line.176"></a>
<span class="sourceLineNo">177</span>   */<a name="line.177"></a>
<span class="sourceLineNo">178</span>  @Beta @Override protected boolean standardRemove(Object element) {<a name="line.178"></a>
<span class="sourceLineNo">179</span>    return remove(element, 1) &gt; 0;<a name="line.179"></a>
<span class="sourceLineNo">180</span>  }<a name="line.180"></a>
<span class="sourceLineNo">181</span><a name="line.181"></a>
<span class="sourceLineNo">182</span>  /**<a name="line.182"></a>
<span class="sourceLineNo">183</span>   * A sensible definition of {@link #removeAll} in terms of the {@code<a name="line.183"></a>
<span class="sourceLineNo">184</span>   * removeAll} method of {@link #elementSet}. If you override {@link<a name="line.184"></a>
<span class="sourceLineNo">185</span>   * #elementSet}, you may wish to override {@link #removeAll} to forward to<a name="line.185"></a>
<span class="sourceLineNo">186</span>   * this implementation.<a name="line.186"></a>
<span class="sourceLineNo">187</span>   *<a name="line.187"></a>
<span class="sourceLineNo">188</span>   * @since 7.0<a name="line.188"></a>
<span class="sourceLineNo">189</span>   */<a name="line.189"></a>
<span class="sourceLineNo">190</span>  @Beta @Override protected boolean standardRemoveAll(<a name="line.190"></a>
<span class="sourceLineNo">191</span>      Collection&lt;?&gt; elementsToRemove) {<a name="line.191"></a>
<span class="sourceLineNo">192</span>    return Multisets.removeAllImpl(this, elementsToRemove);<a name="line.192"></a>
<span class="sourceLineNo">193</span>  }<a name="line.193"></a>
<span class="sourceLineNo">194</span><a name="line.194"></a>
<span class="sourceLineNo">195</span>  /**<a name="line.195"></a>
<span class="sourceLineNo">196</span>   * A sensible definition of {@link #retainAll} in terms of the {@code<a name="line.196"></a>
<span class="sourceLineNo">197</span>   * retainAll} method of {@link #elementSet}. If you override {@link<a name="line.197"></a>
<span class="sourceLineNo">198</span>   * #elementSet}, you may wish to override {@link #retainAll} to forward to<a name="line.198"></a>
<span class="sourceLineNo">199</span>   * this implementation.<a name="line.199"></a>
<span class="sourceLineNo">200</span>   *<a name="line.200"></a>
<span class="sourceLineNo">201</span>   * @since 7.0<a name="line.201"></a>
<span class="sourceLineNo">202</span>   */<a name="line.202"></a>
<span class="sourceLineNo">203</span>  @Beta @Override protected boolean standardRetainAll(<a name="line.203"></a>
<span class="sourceLineNo">204</span>      Collection&lt;?&gt; elementsToRetain) {<a name="line.204"></a>
<span class="sourceLineNo">205</span>    return Multisets.retainAllImpl(this, elementsToRetain);<a name="line.205"></a>
<span class="sourceLineNo">206</span>  }<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span>  /**<a name="line.208"></a>
<span class="sourceLineNo">209</span>   * A sensible definition of {@link #setCount(Object, int)} in terms of {@link<a name="line.209"></a>
<span class="sourceLineNo">210</span>   * #count(Object)}, {@link #add(Object, int)}, and {@link #remove(Object,<a name="line.210"></a>
<span class="sourceLineNo">211</span>   * int)}. {@link #entrySet()}. If you override any of these methods, you may<a name="line.211"></a>
<span class="sourceLineNo">212</span>   * wish to override {@link #setCount(Object, int)} to forward to this<a name="line.212"></a>
<span class="sourceLineNo">213</span>   * implementation.<a name="line.213"></a>
<span class="sourceLineNo">214</span>   * <a name="line.214"></a>
<span class="sourceLineNo">215</span>   * @since 7.0<a name="line.215"></a>
<span class="sourceLineNo">216</span>   */<a name="line.216"></a>
<span class="sourceLineNo">217</span>  @Beta protected int standardSetCount(E element, int count) {<a name="line.217"></a>
<span class="sourceLineNo">218</span>    return Multisets.setCountImpl(this, element, count);<a name="line.218"></a>
<span class="sourceLineNo">219</span>  }<a name="line.219"></a>
<span class="sourceLineNo">220</span><a name="line.220"></a>
<span class="sourceLineNo">221</span>  /**<a name="line.221"></a>
<span class="sourceLineNo">222</span>   * A sensible definition of {@link #setCount(Object, int, int)} in terms of<a name="line.222"></a>
<span class="sourceLineNo">223</span>   * {@link #count(Object)} and {@link #setCount(Object, int)}. If you override<a name="line.223"></a>
<span class="sourceLineNo">224</span>   * either of these methods, you may wish to override {@link #setCount(Object,<a name="line.224"></a>
<span class="sourceLineNo">225</span>   * int, int)} to forward to this implementation.<a name="line.225"></a>
<span class="sourceLineNo">226</span>   *<a name="line.226"></a>
<span class="sourceLineNo">227</span>   * @since 7.0<a name="line.227"></a>
<span class="sourceLineNo">228</span>   */<a name="line.228"></a>
<span class="sourceLineNo">229</span>  @Beta protected boolean standardSetCount(<a name="line.229"></a>
<span class="sourceLineNo">230</span>      E element, int oldCount, int newCount) {<a name="line.230"></a>
<span class="sourceLineNo">231</span>    return Multisets.setCountImpl(this, element, oldCount, newCount);<a name="line.231"></a>
<span class="sourceLineNo">232</span>  }<a name="line.232"></a>
<span class="sourceLineNo">233</span><a name="line.233"></a>
<span class="sourceLineNo">234</span>  /**<a name="line.234"></a>
<span class="sourceLineNo">235</span>   * A sensible implementation of {@link Multiset#elementSet} in terms of the<a name="line.235"></a>
<span class="sourceLineNo">236</span>   * following methods: {@link ForwardingMultiset#clear}, {@link<a name="line.236"></a>
<span class="sourceLineNo">237</span>   * ForwardingMultiset#contains}, {@link ForwardingMultiset#containsAll},<a name="line.237"></a>
<span class="sourceLineNo">238</span>   * {@link ForwardingMultiset#count}, {@link ForwardingMultiset#isEmpty}, the<a name="line.238"></a>
<span class="sourceLineNo">239</span>   * {@link Set#size} and {@link Set#iterator} methods of {@link<a name="line.239"></a>
<span class="sourceLineNo">240</span>   * ForwardingMultiset#entrySet}, and {@link ForwardingMultiset#remove(Object,<a name="line.240"></a>
<span class="sourceLineNo">241</span>   * int)}.  In many situations, you may wish to override {@link<a name="line.241"></a>
<span class="sourceLineNo">242</span>   * ForwardingMultiset#elementSet} to forward to this implementation or a<a name="line.242"></a>
<span class="sourceLineNo">243</span>   * subclass thereof.<a name="line.243"></a>
<span class="sourceLineNo">244</span>   *<a name="line.244"></a>
<span class="sourceLineNo">245</span>   * @since 10.0<a name="line.245"></a>
<span class="sourceLineNo">246</span>   */<a name="line.246"></a>
<span class="sourceLineNo">247</span>  @Beta<a name="line.247"></a>
<span class="sourceLineNo">248</span>  protected class StandardElementSet extends Multisets.ElementSet&lt;E&gt; {<a name="line.248"></a>
<span class="sourceLineNo">249</span>    /** Constructor for use by subclasses. */<a name="line.249"></a>
<span class="sourceLineNo">250</span>    public StandardElementSet() {}<a name="line.250"></a>
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<span class="sourceLineNo">252</span>    @Override<a name="line.252"></a>
<span class="sourceLineNo">253</span>    Multiset&lt;E&gt; multiset() {<a name="line.253"></a>
<span class="sourceLineNo">254</span>      return ForwardingMultiset.this;<a name="line.254"></a>
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<span class="sourceLineNo">257</span>  <a name="line.257"></a>
<span class="sourceLineNo">258</span>  /**<a name="line.258"></a>
<span class="sourceLineNo">259</span>   * A sensible definition of {@link #iterator} in terms of {@link #entrySet}<a name="line.259"></a>
<span class="sourceLineNo">260</span>   * and {@link #remove(Object)}. If you override either of these methods, you<a name="line.260"></a>
<span class="sourceLineNo">261</span>   * may wish to override {@link #iterator} to forward to this implementation.<a name="line.261"></a>
<span class="sourceLineNo">262</span>   * <a name="line.262"></a>
<span class="sourceLineNo">263</span>   * @since 7.0<a name="line.263"></a>
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<span class="sourceLineNo">268</span><a name="line.268"></a>
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<span class="sourceLineNo">270</span>   * A sensible, albeit inefficient, definition of {@link #size} in terms of<a name="line.270"></a>
<span class="sourceLineNo">271</span>   * {@link #entrySet}. If you override {@link #entrySet}, you may wish to<a name="line.271"></a>
<span class="sourceLineNo">272</span>   * override {@link #size} to forward to this implementation.<a name="line.272"></a>
<span class="sourceLineNo">273</span>   * <a name="line.273"></a>
<span class="sourceLineNo">274</span>   * @since 7.0<a name="line.274"></a>
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<span class="sourceLineNo">279</span><a name="line.279"></a>
<span class="sourceLineNo">280</span>  /**<a name="line.280"></a>
<span class="sourceLineNo">281</span>   * A sensible, albeit inefficient, definition of {@link #size} in terms of<a name="line.281"></a>
<span class="sourceLineNo">282</span>   * {@code entrySet().size()} and {@link #count}. If you override either of<a name="line.282"></a>
<span class="sourceLineNo">283</span>   * these methods, you may wish to override {@link #size} to forward to this<a name="line.283"></a>
<span class="sourceLineNo">284</span>   * implementation.<a name="line.284"></a>
<span class="sourceLineNo">285</span>   *<a name="line.285"></a>
<span class="sourceLineNo">286</span>   * @since 7.0<a name="line.286"></a>
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<span class="sourceLineNo">292</span>  /**<a name="line.292"></a>
<span class="sourceLineNo">293</span>   * A sensible definition of {@link #hashCode} as {@code entrySet().hashCode()}<a name="line.293"></a>
<span class="sourceLineNo">294</span>   * . If you override {@link #entrySet}, you may wish to override {@link<a name="line.294"></a>
<span class="sourceLineNo">295</span>   * #hashCode} to forward to this implementation.<a name="line.295"></a>
<span class="sourceLineNo">296</span>   *<a name="line.296"></a>
<span class="sourceLineNo">297</span>   * @since 7.0<a name="line.297"></a>
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<span class="sourceLineNo">302</span><a name="line.302"></a>
<span class="sourceLineNo">303</span>  /**<a name="line.303"></a>
<span class="sourceLineNo">304</span>   * A sensible definition of {@link #toString} as {@code entrySet().toString()}<a name="line.304"></a>
<span class="sourceLineNo">305</span>   * . If you override {@link #entrySet}, you may wish to override {@link<a name="line.305"></a>
<span class="sourceLineNo">306</span>   * #toString} to forward to this implementation.<a name="line.306"></a>
<span class="sourceLineNo">307</span>   *<a name="line.307"></a>
<span class="sourceLineNo">308</span>   * @since 7.0<a name="line.308"></a>
<span class="sourceLineNo">309</span>   */<a name="line.309"></a>
<span class="sourceLineNo">310</span>  @Beta @Override protected String standardToString() {<a name="line.310"></a>
<span class="sourceLineNo">311</span>    return entrySet().toString();<a name="line.311"></a>
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<span class="sourceLineNo">313</span>}<a name="line.313"></a>




























































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